Driving assistance apparatus and adjusting method thereof

The invention provides a driving assistance apparatus and an adjusting method thereof. The purpose of the present invention is to accurately acquire the position of an object in a predetermined detection region with respect to a vehicle by means of a sensor device provided in a vehicle driving assistance apparatus. As a result, it is necessary to perform an adjustment operation when the sensor device is attached to a vehicle body, but it is possible for a worker to accurately position a target (reference target) used in the adjustment operation at a predetermined position, which may cause a burden to be increased. As an adjustment operation, a correction angle, which is an angle formed by an axis indicating the direction of the detection region with respect to the vehicle and a vehicle reference axis, is acquired on the basis of the position (sensor detection position) of the target with respect to the sensor device acquired by the sensor device and the position (vehicle relative position) of the target with